Measure the size of the multiexp tables

LFDT-Lockness · Sep 22, 2023 · 58ecdfe · 58ecdfe
1 parent 67d8cf0
commit 58ecdfe
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diff --git a/cggmp21/src/key_share.rs b/cggmp21/src/key_share.rs
@@ -268,6 +268,20 @@ impl<L: SecurityLevel> DirtyAuxInfo<L> {
 
         Ok(())
     }
+
+    /// Returns size of all multiexp tables (in bytes) stored within key share
+    pub fn multiexp_tables_size(&self) -> usize {
+        self.parties
+            .iter()
+            .map(|aux_i| {
+                aux_i
+                    .multiexp
+                    .as_ref()
+                    .map(|t| t.size_in_bytes())
+                    .unwrap_or(0)
+            })
+            .sum()
+    }
 }
 
 impl<E: Curve, L: SecurityLevel> DirtyKeyShare<E, L> {

diff --git a/tests/src/bin/measure_perf.rs b/tests/src/bin/measure_perf.rs
@@ -219,6 +219,14 @@ async fn do_becnhmarks<L: SecurityLevel>(args: Args) {
             let took = std::time::Instant::now().duration_since(start);
 
             println!("Precompute multiexp tables (avg): {:?}", took / n.into());
+            println!(
+                "Size of multiexp tables per key share: {} bytes",
+                aux_data[0].multiexp_tables_size()
+            );
+            println!(
+                "Size of exponents: {:?}",
+                cggmp21::security_level::max_exponents_size::<L>()
+            );
             println!();
         }